Building panel



FIG. 1 is a perspective view of a building panel showing my new design;

FIG. 2 is a right side elevational view with the left side being a mirror image thereof;

FIG. 3 is a top view with the bottom view being a mirror image thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

The broken line showing of a plurality of building panels enclosing a hay bale is for demonstrative purposes and forms no part of the claimed design. 

The ornamental design for a building panel, as shown and described. 